public static TreeNode BuildChildNode(this TreeView treeView, string id, List <JNodeData> datas)
{
TreeNode rootNode = new TreeNode(id);
JNodeData rootData = datas.FirstOrDefault(row => row.Id == id);
if (rootData != null)
{
rootNode.ToolTipText = rootData.Text;
rootNode.Tag = rootData.Tag;
}
var childrenNodeData = datas.Where(row => row.PId == id);
if (childrenNodeData == null || childrenNodeData.Count() == 0)
{
return(rootNode);
}
foreach (JNodeData childNodeData in childrenNodeData)
{
TreeNode childNode = treeView.BuildChildNode(childNodeData.Id, datas);
if (childNode != null)
{
// childNode.ParentNode = rootNode;
rootNode.Nodes.Add(childNode);
}
}
return(rootNode);
}
public static TreeView BuildTree(this TreeView treeView, string connStr, string sql)
{
DataTable table = SqlHelper.ExecuteDataTable(connStr, CommandType.Text, sql, null);
List <JNodeData> datas = new List <JNodeData>();
foreach (var item in table.Rows.Cast <DataRow>())
{
string id = item["ID"].Value <string>();
string pid = item["PID"].Value <string>();
string name = item["Name"].Value <string>();
JNodeData node = new JNodeData(id, pid, name, item);
datas.Add(node);
}
treeView.Nodes.Add(treeView.BuildChildNode("0", datas));
//treeView.Nodes.Add();
return(treeView);
}